JPH0659346B2 - Cartridge type razor - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cartridge type razor.

[Prior Art] Conventionally, in order to enhance the stability of the blade edge when the skin surface of a cartridge type razor is moved, a device (actually 61-45075) of a cartridge type razor in which the distance from the cartridge tip to the blade edge is increased is disclosed. Has been done. When a cartridge-type razor is manufactured by utilizing such a device and increasing only the distance E from the tip of the cartridge to the blade edge without changing the front-rear length of the entire cartridge, the blade body is located at the rear portion of the cartridge. Further, if the length of the cartridge in the front-rear direction is made shorter than that of the conventional one, the position of the blade further becomes the rear portion of the cartridge.

[Problems to be Solved by the Invention] However, for example, in the two-blade cartridge type razor shown in FIG. 6, in order to increase the distance from the cartridge tip to the blade edge 30a of the lower blade body 30 as in the conventional case, both upper and lower blade bodies are provided. When the parts 30 and 34 are located at the rear part of the cartridge, the caulking projection 33 for crimping them is also located at the rear part of the cartridge. Therefore, when the caulking projection 33 is caulked, the clamping force of the caulking projection 33 causes the front portion of the cap member 31 and the blade base 32 to
And may float on each other, resulting in insufficient fixation of the entire cartridge.

Therefore, it is an object of the present invention to provide a cartridge type razor in which the front portion of the cap member and the blade base do not float even if the rear portion of the cartridge is swaged by the swaging protrusion.

[Means for Solving the Problems] In order to solve the above-mentioned object, in the present invention, a locking portion is provided in the front portion of the blade base, and the front portion of the cap member is provided with respect to the locking portion of the blade base. The gist of the present invention is to provide an engaging portion for engaging the blade body in the thickness direction so as not to be disengaged, and to fix the entire cartridge by the engaging action of both engaging portions and the caulking action on the rear side of the cartridge.

[Operation] In the present invention, the entire cartridge is fixed by caulking the rear portion of the cartridge with the engaging portion of the front portion of the blade base and the engaging portion of the front portion of the cap member engaged. The front portion of the member and the front portion of the blade base do not float on each other, and the fixation of the entire cartridge does not become insufficient.

[Embodiment] An embodiment embodying the present invention will be described below with reference to FIGS.

As shown in FIG. 2, the cartridge 1 is provided on the holder 2, and as shown in FIG. 1, a blade base 3, an upper blade body 4,
Lower blade 5, spacer 6 between upper blade 4 and lower blade 5
And a cap member 7.

As shown in FIGS. 1 and 3, a lower blade mounting surface 8 is formed on the blade base 3 so as to extend in the left-right direction, and a whiskers removal hole 9 is formed in the vertical direction at the front portion of the blade base 3. Is formed to extend to. The front end of the blade base 3 is a guard receiving portion 3a, and a pair of left and right locking projections 10 projecting forward are formed on the guard receiving section 3a. The lower surface of the locking projection 10 is a locking surface. It is 10a.

As shown in FIGS. 1 and 3, recesses 11 having caulking holes 6a are formed on the spacer 6 in the left-right direction. Further, a plurality of caulking projections 12 are provided on the lower surface of the cap member 7 so as to project downward, and the caulking projections 12 are slightly tapered. The front part of the cap member 7 is integrally formed with a guard 13 extending in the left-right direction.
A pair of left and right locking projections 1 projecting rearward are provided on the inner lower part of 3.
4 is formed, and the upper surface of the locking convex portion 14 serves as a locking surface 14a. The two locking projections 14 and the two locking projections 10 of the blade base 3 are engaged with each other by their locking surfaces 14a, 10a which cannot be separated in the vertical direction.

As shown in FIGS. 1, 3, and 4, the lower blade body 5 is placed on the lower blade body mounting surface 8, and the upper blade body 4 is placed on the lower blade body 5 via a spacer 6. ing. The cap member 7 is superposed on the upper blade body 4, and the caulking projections 12 thereof pass through the upper blade body 4, the spacer 6, the lower blade body 5, and the caulking holes 4a, 6a, 5a, 3a of the blade base 3, and the blade base. The lower surface of 3 is melted and caulked.

As a result, the upper blade body 4 is sandwiched between the cap member 7 and the spacer 6, and the lower blade body 5 is sandwiched between the blade base 3 and the spacer 6. In this state, the upper blade body 4 and the lower blade body 5 are substantially parallel to each other, and the blade edge 5b of the lower blade body 5 projects further forward than the blade edge 4b of the upper blade body 4. Further, the locking surfaces 14a, 10a of the two locking projections 10 are engaged with each other in a vertically disengageable manner.

As described above, in the present embodiment, in the front portion of the cartridge 1, the locking convex portion 14 of the cap member 7 and the locking convex portion 10 of the blade base 3 are engaged with each other at the locking surfaces 14a and 10a. Since the cartridge 1 is caulked by the caulking protrusion 12, the front portion of the cartridge 1 is never separated even though the blade base 3, the upper and lower blade bodies 4, 5 and the spacer 6 are caulked at the rear portion of the cartridge 1. The entire cartridge 1 can be sufficiently clamped and fixed.

Further, in the razor of this embodiment, the length L between the blade edge 5b of the lower blade body 5 and the front end of the guard 13 of the cap member 7 is long, and the stability of the blade edge during skin movement is high.

The present invention is not limited to the above embodiment, but may be as follows.

(A) As shown in FIG. 5, the rear surface of the locking projection 14 of the cap member 7 is formed into a curved surface, and the front surface of the locking projection 10 of the blade base 3 is fixed to the locking projection of the cap member 7. It is formed so as to correspond to the rear surface of the portion 14.

(B) The locking projection 14 of the cap member 7 is attached to the cap member 7.
Is formed on the side front part of the blade base 3 so as to correspond to the rear surface of the locking protrusion 14 of the cap member 7.

[Effects of the Invention] As described in detail above, in the present invention, even if the cartridge is caulked on the rear side, the blade base and the cap member are engaged with each other at the front portion of the cartridge. The cap member and the cap member do not float, and the entire cartridge can be securely clamped and fixed.

[Brief description of drawings]

1 to 4 show a safety razor according to an embodiment of the present invention.
The figure is an exploded perspective view of the cartridge of the same safety razor, FIG. 2 is an assembled perspective view of the same safety razor, FIG. 3 is an enlarged sectional view taken along line XX of FIG. 2, and FIG. 4 is Y- of FIG. Y line enlarged cross-sectional view, fifth
FIG. 6 is a cross-sectional view showing a safety razor having a different locking portion shape according to another example of the present invention, and FIG. 6 is a cross-sectional view of a cartridge showing a conventional safety razor. The cartridge 1, the blade stand 3, the blade bodies 4, 5, the cap member 7, the locking projection 10, the caulking projection 12, and the locking projection 14.

Claims (1)

[Claims] 1. A cartridge type in which a blade base (3), a cap member (7) and blade bodies (4, 5) arranged between these (3, 7) are caulked and fixed at the rear portion of the cartridge (1). In the razor, the locking part (10) is provided on the front part of the blade stand (3),
At the front of the cap member (7), a locking portion (14) that engages with the locking portion (10) of the blade base (3) in an irremovable manner in the thickness direction of the blade bodies (4, 5). And both locking parts (10, 1
A cartridge type razor characterized in that the entire cartridge (1) is fixed by the engaging action of 4) and the caulking action on the rear side of the cartridge (1).